I have two 13brew engine. They seem to have small differences in them. One as turbo outlet pipe bolted on and is aluminum and the other is plastic with hose clamp. There is other minor thing different but the is the biggest. I think both engine are imported from japan. I will post pic later. I did not know if the made different engine throw the years like the fc

 

alum one is a 99+ spec outlet pipe.. but that can also be added to older motors

check under the intake for the rats nest or solenoid block

also check the part number on the turbo's..

if the engines still have the wiring harness the pin outs will be different as well...

 

Yes it must be 99spec, wiring harness is different then the older one. Old one looks alot like S5 fc3s one. thanks for info. One more question are the 99spec turbo better and do they flow more then the older ones.

 

yes they're "better" but there's not a huge diff..

there's a ton of info on them if u search